2111655042 has 64 divisors (see below), whose sum is σ = 5369333760. Its totient is φ = 602610192.

The previous prime is 2111655031. The next prime is 2111655043. The reversal of 2111655042 is 2405561112.

2111655042 is a `hidden beast` number, since 2 + 1 + 1 + 1 + 655 + 0 + 4 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 2111654997 and 2111655015.

It is not an unprimeable number, because it can be changed into a prime (2111655043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 368733 + ... + 374415.

It is an arithmetic number, because the mean of its divisors is an integer number (83895840).

Almost surely, 2^2111655042 is an apocalyptic number.

2111655042 is an abundant number, since it is smaller than the sum of its proper divisors (3257678718).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2111655042 is a wasteful number, since it uses less digits than its factorization.

2111655042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6684 (or 6678 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 2111655042 is about 45952.7479265386. The cubic root of 2111655042 is about 1282.9438756301.

The spelling of 2111655042 in words is "two billion, one hundred eleven million, six hundred fifty-five thousand, forty-two".